Underworld

The Underworld, also known as Hades, is where the souls of the dead spend eternity in Greek mythology. As such, it features prominently in the God of War franchise. All three games in the series feature gameplay sections in areas of the Underworld.

A particular section in God Of War, the Blades Of Hades, gained notoriety amongst gamers for it's punishing difficulty, sending the player back to the start of his climb should they come into contact with any of the blades.